I have seen my units overheat twice. The first time was accidental when I set the unit on end and prevented proper air flow. The second time was in Bend, Oregon when I was charging in the full heat of broad daylight on a wide sidewalk against a metal wall: Think frying pan-hot! In both cases the units simply shut down. Allow them to cool and they will resume.
When they approach the end, the fans will slow down. I have two in series so one will cut out before the other. Eventually they wind on down. My cross-country pack is so large though that this takes a while to completely shut down. There is a trickle of current that remains – though continues to decline. Several times I have forgotten to disconnect the charger and it simply goes into a maintenance-mode; it sounds like clicking as the internal circuitry periodically checks the charge and clicks off.
Whatever you set the voltage limits to – this will be the final voltage when it shuts down. The only way to over-volt/overcharge is by human error when setting the device. On the Road
– this has been a faithful unit. In hindsight I would probably select a higher wattage device to speed my charge: For my commuter pack – this is plenty-fast! For cross-country – it’s a little slow; the circuit can handle more. The day that I went 187 miles to Fresno with a one-hour top-off took 10 hours to recharge that pack. For cross-country, you have to get on the stick right away and setup recharging ASAP for the next day.
One other item that I do wish to point out is that the little screws holding the wires in place can be troublesome
. These units are designed for static operation and not for packing around with wires dangling off. There needs to be some mechanism to provide a strain-relief
, else the wires will pull out, or worse - jack with the screw causing the capture nut below to dislodge and the clamping aspect to disappear.
It’s a good series though with lots of promise. I am already dreaming of how to use them with my next concept.
Best regards, KF